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int intval;float realval1;float realval2;float real;int cantreal;
%}
%init{
%init}
%%
(\ |\t)+ {break;}
\n {break;}
"+" {return TokenDef.MAS;}
"*"{return TokenDef.POR;}
"−"{return TokenDef.MENOS;}
"/"{return TokenDef.DIVIDE;}
"("{return TokenDef.PAREN_A;}
")"{return TokenDef.PAREN_C;}
INIT{intval=0;}
([0−9]
ACTION{Integer aux=new Integer(yytextchar()+"");
intval=intval*10 + aux.intValue();}
)+ {System.out.println("Natural: "+intval);
yylval_update(new Symbol(TokenDef.ENTERO,new ent()));
((ent)(yylval().value)).valor.put(Integer.parseInt(yytext(),10));
return TokenDef.ENTERO;}
INIT{realval1=0;realval2=0;cantreal=1;}
([0−9]
ACTION{Integer aux=new Integer(yytextchar()+"");
realval1=realval1*10 + aux.intValue();}
) + \. ([0−9]
ACTION{Integer aux=new Integer(yytextchar()+"");
cantreal=cantreal*10;
realval2=realval2*10 + aux.intValue();}
)+
{real=realval1+(realval2/cantreal); System.out.println("Real: "+real);
yylval_update(new Symbol(TokenDef.REAL,new real()));
((real)(yylval().value)).valor.put(new Float(yytext()).floatValue());
return TokenDef.REAL;}
%%
import output.TokenDef;
import java.lang.Integer;
import java.lang.Float;
import java.io.*;
import java.lang.System;
%{
class GLOBAL {}
%}
class ent {int valor;}
class real {float valor;}
class exp {int valor_i; float valor;}
%token MAS, MENOS, POR, DIVIDE, PAREN_A, PAREN_C
%token <ent> ENTERO
%token <real> REAL
%type <exp> Expr, Factor, Term, Numero
%start S
%%
S : Expr {System.out.println(" El valor es: " + $1.valor);}
;
Expr : Expr MAS Term
ATTRIBUTION { $$.valor = $1.valor + $3.valor; }
| Expr MENOS Term
ATTRIBUTION { $$.valor = $1.valor − $3.valor; }
| Term
ATTRIBUTION { $$.valor = $1.valor ; }
;
Term : Term POR Factor
ATTRIBUTION { $$.valor = $1.valor * $3.valor; }
| Term DIVIDE Factor
ATTRIBUTION { $$.valor = $1.valor / $3.valor; }
| Factor
ATTRIBUTION { $$.valor = $1.valor ; }
;
Factor : PAREN_A Expr PAREN_C
ATTRIBUTION { $$.valor = $2.valor ; }
| Numero
ATTRIBUTION { $$.valor = $1.valor ; }
;
Numero : ENTERO
ATTRIBUTION{ $$.valor = $1.valor ;}
| REAL
ATTRIBUTION { $$.valor = $1.valor ;}
;
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